Controlling mechanism for elevator doors



R. S. PEELLE. CONTROLLING MECHANISM FOR ELEVATOR-DO0RS.

APPLICA HON FILED -I\UG. 2. I919- 1,410,271 Patented Mar. 21, 1922.

3 SHLLIS-SHEEI I.

Fiq. 1

anumtoz R. S. PEELLE.

CONTROLLING MECHANISM FOR ELEVATOR DOORS. APPLICATION mm AUG.2| m9.

1 ,41 0,27 1 Patented Mar. 21, 1922.

3 SHIzETS-SHEET 2.

* Pamnted Mar. 21,1922.

3 SHEETS-SHEET 3- UNITED STATES PATENTOFFICE.

ROBERT S. PEELLE, OF NEW YORK; N. Y.. ASSIONOB TO THEPEEME COMPANY, OF

BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

CONTROLLING MECHANISM FOR ELEVATOR DOORS.

Application filed August 2, 1919.

To a?! Miro-27L it may comm I 72.

in it known that l, Roman"; S. PEELLE, a citizen oi the United States, residing at Hollis, in the borough of Queens, city of Nrw York. county of Queens, and State of New (orig have invented iertain new and use lul improvements in Controlling Mecha- Ilisms for llleva tor Doors. of which the follmriug is a spia-iiiwition. reference being had therein to the :ncompanying drawings, which form a part thereof.

My in vcution relates to controlling mechanisms for elevator doors, and more particularly to iontrolling mechanisms for elevator doors of the full automatic type, the term full automatic" in this art referring to a door which is both opened andrlosed-without the application of manual power thereto.

in an elevator door made in acrordancc with my invention. I employ an clectric motor actuating a win h. the table from which is opcrativcly conncitcd with each door in a shaft in a manner to permit the opening ot any door by a controller 10- rat d in the rar.

My invention is particularly applicable to lcrator doors wherein the door structure iuh that upon the release of a lat h. the door will either automatically open or automatically losc. this normal tendency of the door being controlled hr the actuating inc hanism o'l" my invention so as to place both the o 'icning and the closing movement of the door under the control oi the operator through the controller in the car.

it is essential. in tonnection with doors of the type to which my invention relates, to provide each door with an individual lO('lin; mechanism in order that the actuating mechanism common to all of the doors will he opcrati'vc only to permit the opening of that door at whiih a car may be. this latch mechanism either being operated manually or hy a mechanism carried by the car. preferably the latter.

In addition to thus providingior the power opening and closing of the several doors in a shaft. l provide in connection ith the door actuating mechanism a suitable me hanism whereby. with the initial opening increment, of the door. the electrical rinnit controlling; the application of power Specification of Letters Patent.

Patented Mar. 21, 1922.

Serial No. 314,827.

to the (31 will be made or broken to prevent movement of the car after the door has once been opened, and permitting the application of power to the car only when a door has been fully closed. This mechanism is actuated through the same mechanisms controlling the opening and closing movement of the doors, and while it is operatively connected with the doors So as to move in synt-hronism therewith, it nevertheless does not have any operative-efiect upon the doors, being dependent solely upon said door actuating inechanisnr for its function- 1110.

when the circuits to the motor forming a part of the door actuating mechanism, are open, said door actuatingmechanism will. be locked so as to prevent the forcing of any door, this lock also being utilized to prevent any tendency of such an overrun ning of the motor as would tend to impart movement to any door in excess of that re- (1llIIQ(l to fully close same.

in addition to the characteristics above referred to. I provide, in addition to the controller for the door actuating mechanism within the can automatically acting switches having the two-told function of preventing the application of power to the motor of the door actuating mechanism. except under conditions required by the position of the door, while at the same time limiting the duration of the application of power to a door to that interval required to either fully open or fully close same.

The controller ofthe circuits to the door a'tuating' mechanism which is arranged in the car, is so constructed that loy a single movement all of the electrical conditions about said door actuating mechanism will be properly and simultaneously established.

hile the application of power to the car will be prevented substantially instantly with the initial opening movement of a door. and will be permitted only with the full closure thereof. and while the supplemental switch mechanism above referred to will permit power to be applied to the door to impart movement thereto only inthat. diret opened and closed irrespective of the control of the power for actuating the car. and the power for opening and closing a door may be cut off when the door is either partially opened or partially closed. and thereafter applied thereto, to either fully open or fully close the door, the supplemental switch mechanism above referred to being operative only when the door is either fully opened or fully closed.

The controller within the car is so constructed and arranged that immediately upon its release by the operator, the various circuits to the door actuating mechanism will be instantly interrupted, thus permitting movement of a door to be instantly arrested by merely releasing said controller, thus imparting to the device a great factor of safet The invention consists primarily in a controlling mechanism for elevator doors embodying therein a plurality of vertically sliding doors in a shaft, an electric motor, a winch actuated. thereby, a flexible connection passing about said Winch and operatively connected with each door in a shaft. a controller for the circuits to said motor arranged within a car, and a limit switch mechanism whereby the operative effect of said controller will be determined by the po sition of any door in a shaft; and in such other novel features of construction and combination of parts as are hereinafter set forth and described, and more particularly pointed out in the claims hereto appended.

Referring to the drawings,

Fig. l is a view showing a portion of an elevator shaft showing two doors therein. and a controlling mechanism therefor em hodying my invention;

Fig. 2 is a detail view of the clutch mechanism for preventing excess movement of the motor;

Fig. 3 is a side elevation of one form of controller Fig. 4 is an end elevation thereof; and

Fig. 5 is a diagrammatic view of the wiring of the controlling mechanism.

Like letters refer to like parts throughout the several views.

In the embodiment of my invention shown in the drawings. I have indicated at A a portion of an elevator shaft having mounted therein two door structures of a type in which the sections, in opening and closing the doors. have simultaneous movement in opposite directions in the same vertical plane. The construction of each of the doors shown is the same as the other. and dupli' cate reference letters are therefore used in conjunction therewith. Each of the doors comprises an upper section a and a. lower sect ion 7) connected by the cable or other flexible connection 0 passing over the pulleys c. The lower section Z) is provided with a hanger bar 5' projecting beyond each side of the section 2'). The detailed construction of. the doors is immaterial to the present invention. and is therefore not shown in the drawings or herein described.

The section 7), in the type of door shown, overbalances the section a so that when the latch mechanism of the door is released, which mechanism is shown conventionally at (I, there is a normal tendency of the door to open automatically.

In connection with said doors, I provide a door actuating mechanism including therein a reversible elc'tric motor a and a winch f driven therefrom by means of the worm gear shaft f and gear f Extending about the winch f a flexible strip. cable. or other connection 9 having branches g and g passing about the pulleys g and g respectively and operatively connected with each of the doors in a shaft by being passed through an opening in the hanger bar Z) in which said extension cables g and g are free to slide. This construction is to permit the opening of any door in a shaft upon the actuation of the motor 6, the strips g and 9 being capable of movement with a door to be opened and of movement independently of all the other doors in a shaft which remain closed. The extensions 9' and g carry, adj accnt and below each hanger bar 5, a block l adapted to normally engage said hanger bar when the door is closed, to have movement therewith as the door opened, and to unpart movement to a door during the closing operation.

The extensions 9 and g each have a weight. as i, at the lower end thereof to maintain these extensions taut.

After passing about the winch j, the flexible strip or cable 9 passes to a. sliding weight j mounted in suitable guides j. said guides adjacent the bottom thereof supporting a make and break mechanism j controlling the circuit to the car actuating means. This weight, by this cm'lstruction. moves in syn chronism with any door being opened and closed. the load of the weight, however. being sustained by the winch f. thus relieving the doors of any influence from this weight.

In F g. l of the drawings, 1 have shown the controlling mechanism for the car actuatinir circuit, nnsrely conventionally. since thedctailsol' thisconstructiou fmn'. no part c! mypresentinvention. ltlSdGAll'itliltdWWPVEI'. to control the application of power to a car in accordance with the movement of a door. The weight j in addition to controlling the car actuatingcircuit. also serves to take up slack resulting from the actuation of the. winch j. I have found it desirable. however. to utilize this take-up mechanism for controlling said main actuating circuit. but do not desire to make this feature of the mechanism essential to the invention considered in its broader aspects.

As a consequence of the mechanism above described, it is apparent that the actuation of the motor c is essential to both the open ing and the closing of a door in a shaft. the extent of such movements of the doors being controlled by the duration of the operation of said motor. To limit the operative eti ect ot' the motor to open or close a door to the extent required to either fully open or fully close it. I provide means adapted to :ii substantially simultaneously with the completion of the closing movement. and with the completion of the opening movement oi the door. which will interrupt the circuit the motor c. thus reli w'ing the operator from any necessity for controlling the duration ot the movement of the door through the coin troller in the car.

This automatic circuit interrupter may be aptly described as a limit switch mechanism. In addit'on to thus interrupting the circuit. this limit switch mechanism has the further characteristic that when a door is either fully opened or fully closed. it will prevent application oi power to the motor c except to actuut the winch in one direction only. which direction is defined by the position oi the door. As will more fully appear hereinafter this mechanism will permit a partially opened door to be moved in either direction without requiring movement thereot to the fully opened or fully closed osition.

In conjunction with the limit switch mechanism. l. provide an automatically acting brake operative upon the motor which. upon the interruption of the circuit to the motor c, will be automatically set to prevent possible overrunning ot' the motor utter the interruption of the circuit. this brakin mechanism. however. being released substantially simultaneously with the closing;- ot' the circuit to the motor e. and remaining in this condition so lone as the circuit to the motor (2 remains closed.

While the limit switch mechanism operates entirely indepeni'lently oi the controller switches in the car. the actuation of the brake mechanism above referred to is ontrolled by said controller switches,

In (,les rihing said limit sw tch mechanism said brake mechanism and said controlle mechanism. T will do soin conjunction withthe circuits employed in connection with the door actuating mechanism. which circuit is indicated diegrammatically in Fig.

(arried by the ca r it is a. controller switch mechanism t ((nisisillig oi :i frame In luiring upon opposite sides thereof. similar spring contact members 1*. 7r. 7c and a. The contact members 7." to Ir upon one side of said frame are adapted to close the various circuits incidental to the opening of a door. while the corresponding: contacts upon the other side of the frame are adapted to close the circuits for the closing of a door.

Pivotally mounted between the two sets of contacts above reterred to. is a bridge contact member in having contacts in of electroconductive material. adapted to simultaneously engage all of the contacts upon either side thereof according to the direction of movement of the member 222.

The shaft. of said member or provided with a crank arm m which is acted upon by a Spring m so that normally the contact 71/ will be positioned centrally between the two sets oi contacts is to 7c. and out of clectrical connection with either oi them. By this construction it is apparent that to en sure a continued movement oi a door in either direction. it is necessary For the operator to maintain the contacts in in engagt ment. with one set of contacts. since immediately that the operating handle m for the member In is released. the various circuits will be instantly and auton'iatically in terrupted and thus prevent further move ment of the car.

in the embodiment ot' the invention shown. two of the contacts. as 7'" and will be electrically connected through the wires 1 and 2. to the main line wires 3 and 4- from the source of power For actuating the doors. Others oi the contacts. as 71: and P. will be connected through the wires 5 and (S with the field 7 ot' the motor while the remaining contacts Zr and b will be electrically connected through the wires 8 and 9 with the armature brushes. The corresponding contacts upon the opposite side of the member in. will be conne ted respectively by the wires 1 and 2 with the source of power 3 and 4. by the wires 5 and 6" with the field of the motor. and by the wires i and t) with the commutator brushes. there being this difference in the wiring of the two sets of spring contacts. that while the wires 3 and i) will be connected respectively with the brushes 0 and (F. the wires t and 9 will be connected respectively with the brushes c and (2. thus reversing the direction of flow of the current in the armature with a re sultant reversal of the direction oi rota tion ofthe motor. Hence the switch mechanism G in addition to its other functions. serves as a pole changer.

The limit switch mechanism comprises two switches a and 0 arranged upon a suit able switch board and spaced apart a distance substantially equal to the movement oi a door from the fully opened to the fully closed position. or vice versa.

The switch mechanism 2i comprises fixed contacts 'n. and n forming a. gap in the wire 1, which gap is adapted to be enclosed by a bridge contact if carried by an oscillatory lever a acted upon by a spring n to normaliy bring the contact 01 in electrical con nection with the contacts n and n". The switch mechanism 0 has contacts 0' and 0 similar to the contacts nan a bridge contact u similar to the contact n and a lever 0 and spring 0 similar to the lever and spring ra rr". The contacts 0 and 0 form a gap in the wire '1 instead of in the wire l. 3y this construction the circuits to both sets of contacts k to 1 1: will be automatically included in the circuit from the main line 34 when the working conditions about the door actuating mechanism are such as to re quire this condition.

The lever arms n"-- o" and the parts actuatcd thereby are oppositely sct so that while movement ol one of said levers in one direction will eilcct the closing of the ircuit. similar movement of the other lover will effect the opening, of its circuit.

The flexible connection passes through both of the lever arms n0* and has secured thereto. intermediate said arms. contact balls or block p-71 adapted respectively to co-opcratc with said levers upon a predetermined movcmcnt oi the said connection g.

The brake me hanism above referred to comprises a disc r carried by and rotatable with the shaft f. Pivr..itally mounted 'adja cent said disc, are brake shoes gr---q one of which, r has pivotally mounted thereon a bell crank lover a". one arm of which is connccted by means of the adjustable link q with the other shoe .lliounted adjacent the disc (I a solenoid or other electromannct I". the core of which is piroially connected with said hell crank lever, said core being so set that upon the energizing oi the magnet the bell crank lever 1 will be so oscillated as to release the brake shoes and Acting upon the bell crank lever is a spring; r having a normal tendency toset the brake shoes r (f upon the disc The solenoid r is included. by means of the terminal wires ilk-ll. in the circuit to the field 7, thus causing the release of the brake mechanism with any actuation of the controller switch C, irrespective of the purpose for which this switch may be used.

The operation of tho herein described mechanism is substantially as follows .lssuming that the parts are in the position shown in Fig. 1 of the drawings, the various doors in a shaft will be closed. the brake shoes 52 -4 being set upon the disc 1] in a manner to prevent rotation of the winch f and thus serve to effectively loch all of the doors in a shaft, supplemcnting in this respect the individual locks u operative in connection with the several doors.

Under this condition it is impossible to open any door in a shaft except from the ear B, the individual locks (Z preventing the opening of any door except that closing the opening at the floor at which the car B is standing,

Assuming; that the car ascends to the doorway toward the top of Fig. 1, and it is desired to open this door, when the car is brought to rest, the lo ,l': a will be released by a suitable mechanism on the car when the typ oi lock shown in the drawings is used. Any other desired form of lock may be used, ho were), in lieu of that shown, my invention not relating to the form of individual lock cmployed.

hen it desired to open the door; the operator turns the Contact member m so as to swing'tllc contacts In thereof to the right, as shown in Fig. "-l', thus simultaneously ongaging" all of the contacts is to It upon that side of the fram It. At this time the switch mechanism a will be so set as to close the ciruit through the wire 1, so that with the movcn'icnt of the member or. the following results will occur simultaneously. The field of the motor (1 will be energized. the current will pass to the motor armature, and the solenoid w will he energized to release the brake shoes 9 and When the circuit is thus closed the winch f will b driven by the motor in a manner to pay out the strip or cable 9 and its branches 5; and g. thus permitting that door, the lock (1 of which has been released. to open as a result of the descent of the blocks 14 carried by the extensions 9 and :uljaccnt the hanger bar 7) of that door. The blocks It adjacent the other doors will nicrel rccede from their respective hanger bars, the doors being held in the closed position bv their individual locks 05.

d ith the paying out of the portion of the strip or cable 5/ between the winch f and the several doors. that portion of said strip or cable ,1 between the winch and the block j will be taken up, thus sin'lultaneously permittinp the opening of a door, and raising the block j.

W'ith the initial movemcnt of said block j. the make and break mechanism j Will be automatically actuated to prevent application of power to the car. thus preventing the car leaving: the floor until the door has again been closed.

lVith the paying: out of the strip or cable g in the manner above referred to. the block ,1). will rcccdc from the lever 0 thus permitting: the actuation of the lever under the spring 0 so as to close the gap in the line l through the contacts u 0 and o". and include. the opposite set oi contacts l to 7r? in the main circuit 3-4.

The opening movement of the door will continue so long as the operator holds the contact member m in the position heretofore referred to. It, however. the operator should release this contact member. the spring m will instantly restore said member to a neutral position and thus interrupt the circuits to the field and the armature of the motor, and to the solenoid r, thus causing the paying out oi the cable g to inst-a'ntli stop any possible o'verrunning of the motor 6 being prevented in the automatic setting of the brake members "f -g under th influence of the spring r.

Under this condition it will he observed that both switches 12-0 are so set as to lose the circuits through the wires 1 and l respectively, thus permitting either set of contacts 7a to is to be used so that the door may he either opened or closed. as desired.

The, automatic opening of all circuits in the door actuating mechanism is a great factor of safety. t being possible for the operator to instantly arrestall u'iorement of the doors by merel releasing the controll handle.

i issuming, however. that the operator coutinues to hold the member in in a position to close the circuits to effect the opening ot a dooip until. the door is Fully opened, the closing ot' the circuit through the wire 1* will have no influence whatever in the fun tioning oi the device. Vhen the door approaches a fully open position, however, the ball or block p upon the strip or cable 7 will engage the lever n2 and with the completion ot the opening; movement o the door. oscillate said. lever in a manner to separate the contacts n, 01 and n, and thus automatically open the circuits to the door actuating mechanism. independently of any action oi the operator. or any movement o i the contact member 221. Any movement of the winch in excess ot that required to fully open the door. is thus )revented.

\Vhile the primarily be the section 5 opening ot' the door will. result an -e oi the greater weight in than in the sect ion (1,. th peed oi movement will be controlled entirely in: the motorc through the winch f, the worth gear drive of said winch not only serving: as a. speed reducing transmission; but aleo as a lock which will relieve the door structure froiii any counter'halaucing effect 'ironi the weight j Qt course it is understood that the stri or cable 9 is passed several times about said winch. i

When a door is fully opeucrh it an operator should move the contact in in the wrong direction, this will have absolutely no eilcct in the electrical conditions within a car. since the limit switch n will he maintained in a chndition which will prevent the flow of the current to the motor 0 or solenoid 9'. Hence, if it be desired to close the door, it is neeersar to throw the pivotal contact member ni in V the contacts m to the left. as shown in Fig. 4. thus bridging the contact Ir to It on the other side of the frame 1.; and closing the. circuits to the two brushes ee but with the opposite polarity to the moto armature, and to the solenoid r, ith a resultantre lease or the brake shoes {-11 and the actuation in the motor 6 and winch f, but in the reverse direction. 5'

As a result of this reversal of the direction of rotation of the winch it will pay out the strip or cable between it andthe weight j. while a litting action upon the open door will hecxerted by the blocks )1 upon the extensions 9"? l \Viththe initial movement of the dooiu the block p will rccede from the lever '71. thus permitting the spring" 11'' to actuate said le er in a manner to again close the circuit through the wire 1.

is the door approaches the closed position, the block p will engage the lever 0*, and actuate said lever upon the completion of said closing movement, in a manner to interrupt the circuit through the wire l 'and thus interrupt the variouscircuits to the door actuating mechanism. and automaticall arrest further movement of the doors.

The weight j will take up all slack in the i'tl tlG 5/ as it created by the winch f, said weight, the doors approach their closing movement actuating" the make and break mechanism j in a manner to close the circuit to the car actuating mhchanisn'rainl thus ermit power to he applied to the car tor movement in either direction.

By the foregoing it will be observed that any door in a shaft may he opened and closed by means oi asingrle door actuating mechanism; butthat when a. door is opened this mechanism can be operated onlyin a' manner to close the door: that when a door is closed it may be actuated only in a manner to open the door: afid that when a'door is partially opened it may be actuated either to fully open or fully close it. It will also he observed that the automatic bralie mechanism operative upon the motor mend the power transmission mechanismconnecting the motor 0 with the winch f. w ll not only eiiectivel? prevent dverrunninyl oi the motor and of the winch upon'the interruption o the circuit to the iorinerpbut will serve to effectively lock the doors when in the closed position and prevent the forcible opening thereof 'lrom the floor side oi the dooropeir' ing.

The mechanism shown in the accompanying drawings, I have Found highly satisiactory in actual use, but there may be many variations thereot securing the desired operative effects. without departing from the spirit and scope of the invention. is,

therefore, not my intention'to limit the inthe opposite direction or with ventioi'i to the precise deteiis of construction shown in the accompanying drawings.

Having described the invention, What I claim as new and desire to have protected by Letters Patent, is

l. A controlling me hanism for elevator doors embodying therein a plurality of veractuation tically sliding doors in a shaft, an electric motor, a winch actuated thereby, a flexible connection passing about said winch, means carried thereby adjacent each door in a shaft, and adapted to normally engage its door when in the closed position, and to have movement toward and from this position with the actuation of said winch in opposite directions, whereby all doors in a shal' t will be normally held against opening movement by said means, said flexible connection and said winch, and any door in a shaft may be opened with the movement of said means away from, and will be closed b 7 a return of said means toward, its normal position, a controller for the circuit to said motor arranged within a car, and a limit switch whereby the operative effect of said controller will be determined by the position of any door in a shaft.

2. A controlling mechanism for elevator doors embodying therein a vertically sliding door in a shaft, an electric motor, a winch actuated thereby, a flexible connection pass ing about said winch, means carried thereby adapted to normally engage said door when in the closed position, and to time move ment toward and from this position with the of said winch in opposite direc tions, whereby said door will be normally he d against opening door ,may be opened with e movement of said means away from, and will be closed by a return movement of said means toward, its normal position, a controller for the circuit to said motor, and means adapted to automatically interrupt the circuit to said motor when said door reaches the fully opened, and the fully closed, position.

3. A controlling mechanism for elevator doors embodying therein a vertically sliding door in a shaft, an electric motor, a winch actuated thereby, a flexible connection passing about said winch, means carried thereby adapted to normally engage said door when in the closed position, and to have movement toward and from this position with the actuation of said winch in opposite directions, whereby said door will be movement of said means away from, and will be closed by a return movement of said means toward, its normal position, a controller for the circuit to said motor, meansadapted to automatically interrupt the circuit to said motor when said door reaches the fully opened, and the fully closed, position, a brake mechanism, means tending to normally set said brake mechanism to p vent movement of said motor and said winch, and an electromagnet operative to relieve said brake mechanism, said magnet being in cluded in a circuit from said controller, whereby said brake mechanism will be released only while the circuit to said motor is closed.

4. A controlling mechanism for elevator doors embodying therein a vertically sliding door in a shaft, an electric motor, a winch, a speed reducing transmission mechanism between said motor and said winch including therein a shaft, a brake drum carried by said shaft, brake shoes pivotally mounted adjacent said drum, a bell crank lever mounted on one of said brake shoes. a link connecting one arm of said lever with the other of said brake shoes, a spring acting to normally set said brake shoes upon said drum, a solenoid having the core thereof connected with the other arm of said lever, a flexible connection passing about said winch, means carried thereby adapted to normally engage said door when in the closed iosition, and to have movement toward and rom this position with the actuation of said winch in opposite directions, whereby said door will be normally held against opening movement by said means, said flexible connection and said winch, and said door may be opened with the movement of said means away from, and will be closed by a return movement of said means toward, its normal position and a controller adapted to simultaneously open or close electrical circuits to said motor and said solenoid respectively, whereby, when said circuits are closed, said brake shoes will be disengaged from, and when said circuits are interrnptcd, said brake shoes will be instantly set upon, said drum.

A controlling mechanism for elevator doors embodying therein a plurality of vcrtically sliding doors in a shaft, an electric motor, a winch actuated thereby, a flexible connection passing about said winch, means carried thereby adjacent each door in a shaft, and adapted to normally engage its door when in the closed position, and to have movement toward and from this position with the actuation of said winch in opposite directions, whereby all doors in a shaft will be normally held against opening movement by said means, said flexible connection and said winch, and any door in a shaft may be opened with the movement of said means away from, and will be closed by a return of said means toward, its normal position, a controller for the circuit to said motor arranged within. a car, a limit switch mechanism whereby the operative effect of said controller will be determined by the position of any door in a shaft, a brake mecha* nism, means tent ing to normally set said. brake mechanism to prevent movement of said motor and said winch, and an electromagnet operative to relieve said brake meclr anism. said magnet being included in a cir cult from said controller. whereby said brake mechanism will be released only while the circuit to said motor closed.

6. A controlling mechanism for elevator doors embodying therein a plu ality of vertically sliding doors in a shaft. an electric motor. a winch. a speed reducing transmis sion mechanism between said motor and said winch including therein a shaft. a brake drum carried by said shaft. brake shoes pivotally mounted adjacent said drum. a bell cranl-z lever mounted on one ct said brain shoes. a linl; connecting one arm o? said lever with the other of said brake shoes. a spring acting to normally set said brake shoes upon said drum. a solenoid having the core thereof connected with the other arm of said lever, a flexible connection passing about said winch. means carried thereby adjacent each door in. a shaft. and adapted to normally engage its door when in the closed position. and to have movement toward and from this pi'isition'with the aetuation'ol' said winch in opposite directions. whereby all doors in a sha'lt will be normally held against opening movement by said means. said flexible connection and said winch. and any door in asha'ft may be opened with the movement of said means away from. and will be closed by a return of: said means toward. its normal position. a controller arranged witln in a car and adapted to simultaneously open and close electrical circuits to said motor and said solenoid respectively. whereby. when said circuits are closed. said brake shoes will be disengaged from. and when said circuits are interrupted. said brake shoes will he instantly set upon. said drum. and means ads 1 ited to automatically interrupt the eireuits to said motor and to said solenoid when any door reaches a fully opened. and. a fully closed. position.

7. A controlling mechanism .lor elei'ator doors embodying therein a vertically sliding door in a shaft. a rever ible electric motor. a winch actuated thereby. a flexible connwtion passing about said winch. means carried thereby adapted to normally engage said door when in the closed position. and to have movement toward and from this position with the actuation of said winch in opposite directions. whereby said door will be normally held against opening movement by.

said mean said flexible conneetion and said winch. and said door may beopened with the movement of said means away from. and will be closed by a return movement of said means toward. its normal position. a controller embodying therein a pole changinzi switch mechanism for the rircuit to said motor. and means adapted to automatically interrupt the circuit to said niotor when said door reaches the fully opened. and the fully closed, position.

8. A controlling mechanism .l'or elevator ijloors enibodying therein a. vertically sliding door in a shaft. a reversible electric motor. a winch actuated thereby. a [lexiblc roni'iection passing about said winch. means carried thereby adapted to inirnially engage said door when in the closed position. and to have morement toward and from this position with the actuation of said winch in opposite directions. wiiereliy said door will be normally held against opening movement by said means. said flexible connection and said winch. and said looi' may be opened with the movement ol'. said means away from. and will be closed by a return ll'ltlVCliiUllt of said means toward. its normal position. a. controller tor the circuit to said motor. embodying therein electrical eontse ts in circuit with the line. other electrical contacts in circuit with the motor. and momble contacts adapted respectively to close the circuits through said contacts. and means adapted to automatically interrupt the circuit to said motor when said door reaches the telly opened, and the fully closed. position.

9. controlling mechanism l'oi' t lt i'dlhl doors embodying: therein a plurality of \"Qlt t-ally sliding doors in a shaft. a iiwersible electric motor. a winch actuated thereby. a flexible connection passing about said winch. means carried thereby ad i acent Pfit'll door in a shaft. and adapted to normal y engage its door when in the closed position. and to have movement toward and from this position with the actuation of said winch in opposite directions. whereby all doors in a shalt will be normallyheld against opening movement by said means. said flexible connection and said winch. and any door in a shaft may be opened with the nioven'ient oi said iuians away from. and will be eiosed by a return of said means toward. its normal position. a controller embodyiirg therein a pole changing; switch mechanism lor the circuit to said motor. and ineam adapt d to automatically interrupt the circuit to said motor when said door reaches the l'ully opened. and the telly closed. position.

10. controlling" mechanism for elevator doors embodying therein a plurality oi rcr tically sliding: doors in a shaft. a reversible electric motor. a winch actuated thereby. a flexible connection passin; about said winch. means carried thereby adjz-n'cnt each domin a. shaft. and adapted to normally engage its loor w'lllfi in the closed position. and to ha e movement toward and from this postion with the actuation of -ai l winch in opposite directions. whereby all doors in a shatt'will be normally held against opening movement by said nuans. szid flexible connection and said winch and any door in a shal may be opened with the movement oi' said means. away from. and w l be OSG Jl by a return ol" said. means toward, its normal position. a

controller For the circuit to said motor, embodying therein electrical contacts in circuit with the line, other electrical contacts in circuit with the motor. and movable coutaets adapted respectively to clo.--(,- the circuits through said contacts, and means adapted to automatically interrupt the circuit to said motor when said door reaches the fully opened. and the fully closed. position.

H. A controlling mechanism for elevator doors embodying therein H plurality of vci tically sliding doors in a shaft, an electric motor, a winch actuated thereby. a flexible connection passing about said winch, means carried thereby adjacent each door in a shaft, and adapted to normally engage its door when in the closed position, and to have movement toward and from this position with the actuation of said winch in opposite directions. whereby all doors in a. shaft will be normally held against opening more mcntby said means, said flexiblc connection and said winch, and any door in a shaft may be opened with the nmvcnient 0t Fold means away from, and will be closed by a return o l' suid means toward, its normal position, a controller for the circuit to said motor arranged within a car, a limit switch mechanism whereby the operative effect of said controller will be determined by the position of any door in a shaft, and means whereby the circuit from which power to move the car is derived, will be automatically interrupted with the actuation of said winch to open a door, and will be automatically restored upon the completion of the actuation of said winch to close the door.

12. A. controlling mechanism for elevator doors embodying therein a plurality of vertically sliding doors in a shaft, an electric motor. a winch actuated thereby. a flexible connection passing about said winch, means carried. thereby adjacent each door in a shaft, and adapted to normally engage its door when in the closed position. and to have movement toward and from this position with the actuation of said winch in oppo site directions, whereby all doors in a shaft will be normally held against opening movement by said means, said flexible connection and said winch, and any door in a shaft may be opened with the movement of said means away from, and will be closed by a return of said means toward, its normal position, a controller for the circuit to said motor arranged within a car, a limit switch mechanism whereby the operative effect of said controller will be determined by the position of any door in a shaft. :1 make and break mechanism arranged in the circuit from which power to move the car is derived, and a sliding Weight connected with the end of said flexible connection after it is passed about said winch, whereby said weight will be caused to actuate said incl '2 'and break mechanism to interrupt the circuit substantially simultaneously with the initial opcuing movement of the door under the con-- trol oi sziid winch and said motor, and will close said rircuit substantially simultaneousl with the conu iletion of said closing movement.

13. .i controlling mechanism for elevator doors embodying therein a vertically sliding door in a shaft, on electric motor, a winch actuated thereby, a flexible connection passing about said winch. means carried thereby adapted to normally engoge said door when in the cl sed position. and to have movement toward and from this position with the actuation of said winch in opposite directions, whereby aid door will be normally held against opening movement by said means. said flexible connection and said winch. and sai d or ma be opened with the movement of said means away from, and will be closed by a return movement of said means toward, its normal. position. a controller for the circuit to said motor, means adapted to automatically interrupt. the circuit to said motor when said door reaches the fuliy opened, and the fully closed, position, and means adapted to automatically position said controller so as to interrupt the circuit to said motor, whereby. to ensure a continued movement of the door. the operator must hold said controller in the operative relation.

14. A controlling mechanism for elevator doors embodying therein a vertically sliding door in a shaft. an electric motor. a winch actuated. thereby. a flexible connection passing about said winch. means carried thereby adapted to normally engage said door when in the closed position, and to have movement toward and from this position with the actuation of said winch in opposite directions, whereby raid door will be normally held against opening movement by said means. said flexible connection and said winch, and said door may be opened with the movement of said means away from. and will. be closed by a return movement olF-said means toward, its normal position, a controller for the circuit to said motor embodying therein movable contacts, fixed contacts adapted to be selectively engaged thereby, operating means whereby said movable contacts may be caused to engage either set 01'' fixed contacts, and :1 spring acting upon said operating means whereby said movable contacts will be normally held out of engagement with said fixed contacts. and means adapted to automatically interrupt the circuit to said motor when said door reaches the fully opened, and the fully closed, positlon.

15. A controlling mechanism for elevator doors embodying therein a plurality of ver tically sliding'doors in -a shaft; an electric motor, a winch'actuated thereby, a flexible connectionpassing about said winch, means carried thereby 'adjacent'each door in a shaft; and-adapted to normal-lyengage its door when in the closed-position. and to have'movement toward and from this position with'theatuatronot' said winch in oposite directions, whereby all doors in awhereby the circuit from which power to move the car is derived, will beautcmatically interrupted with the actuati n of said winchto open adoor, and will be automatically restored upon-the completion of theactuation of saidwinch-to close the door l6==A controllingmechanism tor elevator doors embodying therein a vertically sliding door in a shaftyan electric motor, a-Winch actuatedthereby, a flexible connection passing about said winch, means carried thereby adapted to normally engage said door when in theclosed positiom-and to have movement toward and from this position with the actuation of said winc'li in' opposite directions, whereby said door will be normally held against opening movement by said means, said flexible connection and said winch, and said door may be opened with the movement of said means away from, and will be closed by a return movement of said means toward, its normal position, a controller for the circuit to said motor, a brake mechanism, means tending to normally set said brake mechanism to prevent movement of said motor and said winch. and an electromagnet operative to relieve said brake mechanism, said magnet being included in a circuit from said controller. whereby said brake mechanism will be released only while the circuit to said motor is closed.

17. A controllin mechanism for elevator doors embodying t%erein a vertically slidin door in a shaft, an electric motor. a winci actuated thereby, a flexible connection passing about said winch, means carried thereby adapted to normally engage said door when in the closed position, and to havc movement toward and from this position with the ac tnation of said winch in opposite dire tions. whereby said door will be normally held against opening movement by said means. said flexible connection and said winch, and said door may be opened with the movement of said means away from. and will be closed by a return movement of said means toward, its normal position, a controller for the (in cuit to said motor embodying therein two movable contacts ma and will be-closed by the circuit tosaid motor-arranged Wltllln a car, and means sets of oppositely disposed fixed contacts,

some contacts of each set being ilk-(311131111;

withthe-line, and others being in circuit with saidmotor,--the last named contacts of- -oneset-being connected to poles ofthe -m0tor '-'!0 armatureopposite to similar contacts ofnthe otl1er ;set, two movable?- contacts adapted re spect-ively to I engage contacts ofi the same polarity in'each set, a

gaged with the fixer and means adaptedto d means whereby said be simultaneously-en? contacts of-either set,-

automatically" interrupt the cir-cuit-ito said motor when said door reaches closed, position.

ing door'in a shaft, an-electric motor-,-a

the 'fully'opened, and the fully 18. A controlling meehanismtor elevator doors embodying therein a vertically slid-" winch actuated thereby-,a flexible connection passing about said' wi-nch,- means carried '86 thereby. adapted to normallyengage said door whenin have movement toward the closed position,- and to andtrom this posi-- tion with the actuation'of said'winch in Og-f posite directions, whereby saiddoor will normally held against openingwnovement by said means, said said Winch, with the movementofsaid means-"away from, and willbe closed by a return m o-vement of said means-toward, its normal posi for the circuit tosaid tion, a controller "flexible connection and and said door mayfibe opened motor embodying -therein two sets or oppositely dis'osed fixed contacts, some contacts of eac i set being in circuit with the line, others being in circuit with the motor field winding, and others bein in circuit withsaid motor, the last name contacts of one set being connected to poles of the motor armature opposite to similar contacts of the other set, two movable contacts adapted respectively to engage contacts of the same polarity in each set, and means whereby said movable contacts may be simultaneously engaged with the fixed contacts of either set, and means adapted to automatically interrupt the circuit to said motor when said door reaches the fully opened, and the fully closed, position.

19. A controlling mechanism for elevator door in a shaft, an electric motor, a wine actuated thereby. a flexible connection passing about said winch. means carried thereby adapted to normally engage said door when in the closed position, and to have movement toward and from this position with the actuation of said winch in opposite directions, whereby said door will be normally held against opening movement by said means, said flexible connection and said winch, and said door may be opened with the movement of said Incans away from. and will be closed by a return movement of said means toward, its normal position, a brake mechanism,

means tending to normally set said brake mechanism to prevent ,movement of said motor and said winch, an electromagnet operative to relieve said brake mechanism, @aidacontroller for the circuit to said motor embodying therein two sets of oppositely disposed fixed contacts, some contacts of each set being in circuit with the line, others being in circuit with the motor fieldwinding, others being in "circuit with said magnet, and others being in circuit with said motor, the last named contacts of one set being connected to poles of the motor armature opposite to sim ilar contacts of the other set, two movable contacts adapted respectivel to engage contacts of the same polarity m each set, and means whereby said movable contacts may be simultaneously engaged with the fixed contacts of either set, and means adapted to automatically interrupt the/circuit to said motor when said doortreaches the fully opened, and the fully closed, position.

20. A controllin mechanism for elevator doors embodying therein a vertically sliding doonimashaft,1a reversible electric motor, a winch actuated thereby, a flexible connection assingabout said winch, means carried there y adaptedwto normally engage said door when in the closediposition, and to have movement toward and from this position with the actuation of said winch in opposite directions, whereby said door will be normally held against opening movement by said means, said flexible connection and said winch, and said door may be opened with the movement of said means away from, and will be closed by a return movement of said means toward, its normal position, a controller embodying therein a pole changing switch mechanism for the circuit to said motor, two circuits of opposite polarity adapted to be selectively opened and closed by said controller, a make and break mechanism arranged in each of said circuits and oppositely disposed one to the other, each of said mechanisms embodying a movable contact member, said contact members being spaced apart a distance equalling the full opening or closing movement of the door, and being movable in opposite directions to make or break their respective circuits, and an impact member carried by said flexible connection between said movable contacts and adapted to alternately actuate same, whereby the circuit to said motor will be automatically interrupted when said door reaches the fully opened, and the fully closed, position.

In witness whereof I have hereunto aflixed my signature, in the presence of two subscribing witnesses, this 11th day of July,

ROBERT S. PEELLE. Witnesses 1+. T. WENTWORTH, A. E. REN'roN. 

